Factual error: The quiz on the cereal box asks "who is the most prolific serial killer in the United States", to which Ava replies "Ted Bundy. Although in my opinion, John Wayne Gacy had way more victims than he confessed to." The box also lists Bundy and Gacy (plus the anachronism). 2 things, Gacy was in fact convicted of more murders than Bundy, making him more prolific. But, Samuel Little is the most prolific serial killer in the US and Gary Ridgway is the second. Ted Bundy would rank 6th on most list.
Hey, World! - S4-E16
Continuity mistake: After Gary says "it's part of the show" and turns to face the dragon, he lowers the microphone offscreen. Cut to the front, and it's up by his mouth again.
Chosen answer: Black Canary, Spartan, Wild Dog, and Ragman.